DNA²(D・N・A² ～何処かで失くしたあいつのアイツ～Dī En Ei Tsū: Dokoka de Nakushita Aitsu no Aitsu) is a science fiction manga series by Masakazu Katsura, which was later adapted into a 15-episode anime series. It was serialized across Shueisha's Weekly Shōnen Jump magazine between 1993 and 1994, spanning a total of 5 volumes.